Header beam



FIG. 1 is an isometric view of the header beam, showing our new design;

FIG. 2 is a front plan view of the header beam

FIG. 3 is a rear plan view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom side plan view thereof;

FIG. 6 is a right side plan view thereof; and,

FIG. 7 is a left side plan view thereof.

CLAIM The ornamental design for a header beam, as shown and described.